CVE-2018-18493

NameCVE-2018-18493
DescriptionA buffer overflow can occur in the Skia library during buffer offset calculations with hardware accelerated canvas 2D actions due to the use of 32-bit calculations instead of 64-bit. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
ReferencesDLA-1605-1, DLA-1624-1, DSA-4354-1, DSA-4362-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid111.0.1-1fixed
firefox-esr (PTS)buster91.12.0esr-1~deb10u1fixed
buster (security)102.9.0esr-1~deb10u1fixed
bullseye91.13.0esr-1~deb11u1fixed
bullseye (security)102.9.0esr-1~deb11u1fixed
bookworm, sid102.9.0esr-2fixed
thunderbird (PTS)buster1:91.12.0-1~deb10u1fixed
buster (security)1:102.9.0-1~deb10u1fixed
bullseye1:91.13.0-1~deb11u1fixed
bullseye (security)1:102.9.0-1~deb11u1fixed
bookworm1:102.9.0-1fixed
sid1:102.9.1-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefoxsource(unstable)64.0-1
firefox-esrsourcejessie60.4.0esr-1~deb8u1DLA-1605-1
firefox-esrsourcestretch60.4.0esr-1~deb9u1DSA-4354-1
firefox-esrsource(unstable)60.4.0esr-1
thunderbirdsourcejessie1:60.4.0-1~deb8u1DLA-1624-1
thunderbirdsourcestretch1:60.4.0-1~deb9u1DSA-4362-1
thunderbirdsource(unstable)1:60.4.0-1

Notes

https://www.mozilla.org/en-US/security/advisories/mfsa2018-29/#CVE-2018-18493
https://www.mozilla.org/en-US/security/advisories/mfsa2018-30/#CVE-2018-18493
https://www.mozilla.org/en-US/security/advisories/mfsa2018-31/#CVE-2018-18493

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